https://dbagenesis.com/p/oracle-advanced-rman-backup-recovery
DBA Genesis provides all you need to build and manage effective Oracle technology learning. We designed DBA Genesis as a simple to use yet powerful online Oracle learning system for students. Each of our courses is taught by an expert instructor, and every course is available on demand.
MASTER AND LEARN
- Backup and Recovery Overview
- Cold Database Backup
- Hot Database Backup
- Manual Database Recovery

How to use RMAN basics command step by step.
Command to find out backup piece for an archive log thread and sequence,
Command to see the list/summary of backups available with RMAN catalog,
Command to find out the backup piece details for a datafile.

https://dbagenesis.com/p/oracle-advanced-rman-backup-recovery
DBA Genesis provides all you need to build and manage effective Oracle technology learning. We designed DBA Genesis as a simple to use yet powerful online Oracle learning system for students. Each of our courses is taught by an expert instructor, and every course is available on demand.
MASTER AND LEARN:
- Introduction to RMAN
- Configuring RMAN
- Database Backup using RMAN
- RMAN Database Recovery

Video 38 How does an Oracle database start? - Database Tutorial 38
How does an Oracle database start? - Database Tutorial 38
The startup of sequence of an Oracle Database.
1) Startup process looks for a parameter file in the default location.
2) If a parameter file is found, it then parses it and gets the information about the control files.
3) With that information, it reads the control files.
4) Upto this point, we can say that the Oracle Instance has been started in nomount mode.
5) The same can be achieved by issuing the following command in sqlplus.
a) startup nomount;
6) Then, from the control files, the Instance gets to know about the details of the database and its related files.
7) It then 'mounts' the database.
8) At this point, the database has been started. But it can be only accessed by the DBAs.
9) This is called 'mount' mode.
10) The same can be achieved by issuing the following command in sqlplus.
a) startup mount;
11) Then, once the database has mounted, it gets opened for other users.
12) This is called 'OPEN' mode.
13) This is the final mode of a startup process after which the database is available for use.
14) The same can be achieved by issuing the following command in sqlplus.
a) startup
15) That concludes the startup.

https://dbagenesis.com/p/oracle-advanced-rman-backup-recovery
DBA Genesis provides all you need to build and manage effective Oracle technology learning. We designed DBA Genesis as a simple to use yet powerful online Oracle learning system for students. Each of our courses is taught by an expert instructor, and every course is available on demand.
RMAN provides you flexibility to take full database backups and incremental backups. With the incremental backups, you only take backup of changed blocks. This results in saving the disk space. While taking first incremental backup, it will be count as level 0 incremental backup, which is same in content to RMAN full backup and takes backup of all blocks in the database. Level 1 incremental backup takes backup of only those blocks who modified after earlier incremental backup.

This is a video on how to clone an oracle database using the FROM ACTIVE DATABASE command from RMAN.
You can also read the article on: https://www.protractus.com/?p=2268, the article is much more organized than my unstructured brain :)

https://dbagenesis.com/p/oracle-advanced-rman-backup-recovery
DBA Genesis provides all you need to build and manage effective Oracle technology learning. We designed DBA Genesis as a simple to use yet powerful online Oracle learning system for students. Each of our courses is taught by an expert instructor, and every course is available on demand.
The video speaks about database recovery using RMAN when we have loss of all the data files. First we take DB FULL backup using RMAN and then simulate error by manually deleting all the data files. Later we recover the data base with RMAN backup taken earlier.

In Oracle Database 10gR1 Oracle introduced the RMAN command DROP DATABSE. This one simple statement has the ability to completely remove a database including all RMAN backups with the optional INCLUDING BACKUPS clause.
DROP DATABASE removes all data files, control files, online redo logs. The DROP DATABASE command can optionally delete backups including backup sets, proxy copies, image copies and archive redo logs from the target database from all configured device types.
If the target database is connected to a recovery catalog at the time DROP DATABASE is issued the target database will be unregistered as well as drop delete any backups known to catalog. If the command is issued in NOCATALOG mode then any backups known to the catalog will not be dropped but they will not be in the target database control file either.
The DROP DATABASE must be executed in RMAN while connected to the target database that is mounted and not open and started in RESTRICT SESSION.
Below is a demonstration of the DROP DATABASE command that will drop the database and all backups associated with the database. The Database in the example was not registered with a recovery catalog.

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To perform Backup On the linux system tar archive is an essential application along with zip, Gzip, Bzip2, 7zip compression utility. These videos would demonstrate how to use tar archive to take backup with files and directories along with compression utility such as zip, Gzip, Bzip2, 7zip etc.
Watching these videos would help someone to learn how to use tar , Gzip , Bzip2 , 7zip utility on a linux server for Backup, Backup related stuff, Data compression on storage devices, Even when one needs to transfer or migrate data from one server to another or one location to another remote location within a bunch using possible low bandwidth then these utility provide great facility to accomplish that migration task in ease. Please watch all of these 3 parts of video and keep visiting techytube.com to know "How To's Without Headache".
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Demonstrates a simple usage of Recovery Manager in Oracle. Plan:
1. Backup a database.
2. Simulate a disaster.
3. Restore and recover the database.
For more details please go to http://dba-presents.com/index.php/oracle/11-simple-disaster-recovery-scenario-with-rman-video

MySql Tutorial : How to take mysql database backup using command line
mysql backup script
mysql tutorial for beginners
This MySql Tutorial video will show you How to take backup of MySQL database using mysqldump command.
You can see how to restoring a backup using the command.
Example: mysql database_name database_name.sql
Example: mysqldump database_name db_backup.sql
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mysqldump database
how to backup mysql
mysql backup and recovery

You will learn from this video how a SELECT statement is processed in an Oracle Database. You will learn about the a Parse, Execute and Fetch phases in a select statement.
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April fool’s day If there are hopeless fools, then there should also be fools, which give hope.
As experience shows, its easier to fool somebody on a regular day, rather than on April 1st.
Question: can a joke, played on April 1st, become a present for the New Year? Answer: yes, as theres exactly 9 months period.
Valentines Day The best thing of being my own date for Valentines Day is knowing Im guaranteed to score.
Christmas gift Dear Santa, Please do not leave my gift under the Christmas tree. Drive it straight into the garage.
Christmas tree - I left my girlfriend a Christmas gift under the Christmas tree. - Is she happy? -Not yet, still looking for it. The forest is large, lots of trees.

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Profession joke - A priest A priest tells the prayers: - We have one good news and one – bad ones. The good thing is that we have money for the repair of the church. The bad one – the money are still in your pockets.